Question
Potato cylinders were put into different concentrations of sucrose solution for the same amount of time. The masses of the potato cylinders were measured before and after being immersed in the solutions.
The results are recorded in the table.
Which potato cylinder was put into the solution with the highest sucrose concentration?
▶️Answer/Explanation
Ans: B
The correct answer is B, because :
Sucrose is the high concentration solvent and potato masses are placed in them for equal time.
Water moves from potato cells into the sucrose solution through osmosis principle (it’s the movement of solvent molecules from region of higher concentration to lower concentration).
Movement of water molecules, became the change in mass of potato.
Whereas,
• No change in mass, indicates the sucrose concentration is same as equal to potato cells.
• Increase in potato mass, indicates sucrose concentration is less.